LONG-TERM DEBT (Tables)
 6 Months Ended
Apr. 30, 2016
Debt Disclosure [Abstract]  
Schedule of Senior Notes and Related Interest Rate Swaps
The following table summarizes the company’s long-term senior notes and the related interest rate swaps:
 
 
April 30, 2016
 
October 31, 2015
 
Amortized Principal
 
Swap
 
Total
 
Amortized
Principal
 
Swap
 
Total
 
(in millions)
2017 Senior Notes
$
100

 
$
1

 
$
101

 
$
100

 
$
2

 
$
102

2020 Senior Notes
499

 
17

 
516

 
499

 
19

 
518

2022 Senior Notes
399

 
—

 
399

 
399

 
—

 
399

2023 Senior Notes
598

 
—

 
598

 
598

 
—

 
598

Total
$
1,596

 
$
18

 
$
1,614

 
$
1,596

 
$
21

 
$
1,617